anyone know anything about a 2 stroke atv - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 2 (permalink) Old 04-14-2008, 10:11 PM Thread Starter
 
Join Date: Mar 2007
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anyone know anything about a 2 stroke atv

I just bought a 98 blaster with a vito's 240 big bore kit, trenga racing carb, jet kit, k&n filter, and a full fmf pipe. The top end was just rebuilt like 2 hrs ago and know it sounds like it is knocking in the top end. Any ideas on what it could be?
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post #2 of 2 (permalink) Old 04-15-2008, 08:04 PM
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Usually when a piston "blows up" it sends all kinds of debris down by the crank. Its possible the crank needed rebuilt but wasn't and now you have a bad crank pin/rod/main bearing.
Another possibility is the ports were champhered well enough.

Hard to say without working on the quad myself.
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